This online calculator computes radioactive decay, timed decay, and timed solid disposal for a databank containing 116 isotopes. It also features University of British Columbia disposal limits and a unit converter and date/time calculators. These tools calculate the half-life for selected isotopes; radioactive decay final activity, given the initial activity and decay time; the decay time, given the initial and final activities; and the decay time, given the mass of a solid and the initial activity.

Intended for grade levels:

High (9-12)

College (13-14)

College (15-16)

Graduate / Professional

Type of resource:

Tools:

Calculation / Conversion

Subject:

Chemistry

Physics

Technical requirements:

No specific technical requirements, just a browser required

Cost / Copyright:

No cost

The Radioactive Decay Calculator was created and developed by Alan Enns. Copyright 1997 - 2002. Please do not copy without permission from the author.

DLESE Catalog ID:DLESE-000-000-004-088

Resource contact / Creator / Publisher:

Author:
Alan Enns
No institutional affiliation

Contact:
Maria Pylaeva
Health, Safety, and Environment
University of British Columbia